DRINKING WATER

GettyImages-1514165009_450_300 Beyond Meter Reads: Leveraging Temetra For Enhanced Customer Engagement And Conservation

Las Vegas Valley Water District is modernizing conservation efforts with Temetra, using high-resolution meter data to detect leaks sooner, engage customers, and secure water resources amid extreme drought conditions.

DRINKING WATER CASE STUDIES AND WHITE PAPERS

  • Indiana American Water Eliminates Gaseous Chlorine At Hidden Lake WTP In Warsaw, Indiana

    In 2000, Indiana American Water, a subsidiary of American Water Company, purchased the Warsaw Indiana system which serves a population of over 16,000. Indiana American then completed a Comprehensive Planning Study that included a number of upgrades and improvements to enhance the reliability, safety and water quality of the system.

  • LCR Revisions Push Systems Into Uncharted Waters: Schools & Childcare Facilities

    Here are some thought-provoking considerations for water testing at K-12 schools and the utilities, government officials, and engineering firms who serve them.

  • Greater Efficiency And Peace Of Mind With The KETOS SHIELD

    In this case study, explore how a municipality automated its water quality testing to ensure compliance in real time. 

  • The Murky Future Of Global Water Quality

    Population growth, economic development, and climate change are placing increasing pressure on our planet’s water resources. Many studies, including one conducted by IFPRI and Veolia in 2011, depict a future world with elevated tensions due to growing demand for a limited supply of water.

  • Ensuring Continuous Water Supply During Emergency Hospital Line Repair

    Hydra-Stop's insertion valve provided targeted control to allow for the removal and replacement of a cracked pipe without affecting service to a hospital. 

  • KETOS Provides Real-Time Lab Accurate Results For Effluent Water

    A leading provider of water and wastewater treatment solution for industrial, municipal, and recreational customers faced a number of issues with the safe treatment and disposal of coal ash and residual ash in ponds. Frequent testing at multiple locations was needed to ensure water safety and compliance. 

  • How To Calculate Backwash Flow Rate Requirements For Iron Filter Systems

    While there are various less common types of treatment systems used to remove iron and manganese from groundwater (such as ion exchange and ultra-filtration), most treatment systems use some form of oxidation and filtration to oxidize the clear state of iron to a solid form so the solid particles can then be filtered out.

  • World's Largest 1,4-Dioxane Treatment Initiative

    Groundwater on Long Island, New York, contains the contaminant 1,4-dioxane. Despite no federal regulation, local water providers and state authorities have taken action to address contamination, establishing a state-enforced maximum contaminant level.

  • Distillery Wastewater Byproducts Fuel Sustainability

    For distilleries, high levels of biochemical oxygen demand (BOD), nitrogen, total dissolved solids (TDS), and total suspended solids (TSS) put extra pressure on optimal biological treatment requirements. Here are some techniques that can help distillers put a little extra money in the bank while meeting the challenges of environmental discharge requirements.

  • 4-Log Virus Inactivation - Abington, Pennsylvania (Case Study)

    The Hall Road Well Station — located in Abington, Pennsylvania — is designed to extract and treat 1.5 million gallons per day (MGD) of water from the Piedmont and Blue Ridge crystalline-rock aquifers. It is part of a network of groundwater extraction wells owned and operated by Aqua-America Pennsylvania (Aqua PA). Aqua PA determined that UV technology was the best approach for meeting the Pennsylvania Department of Environmental Protection regulations for 4-log virus treatment of groundwater. This case study will show you why they chose the TrojanUVSwift™SC.

DRINKING WATER APPLICATION NOTES

DRINKING WATER PRODUCTS

HYMAX GRIP  joins and restrains a wide selection of pipes of different types and diameters, easily and reliably. Due to its patented design, it allows the joining of pipes of the same or different materials and diameters and preventing axial pipe movement.

The OPTISONIC 3400 is a 3-path ultrasonic inline flowmeter designed for a wide range of standard or more demanding process applications with homogeneous, non-viscous aqueous liquids as well as viscous fluids of up to over 1000 cSt. It is also the perfect choice for applications with cryogenic products (as low as -200°C / -328°F), media with extended temperature ranges (up to +250°C / +482°F) as well as low or extreme pressure ratings. The OPTISONIC 3400 offers a broad range of diameters – from DN25 / 1" for dosing purposes to DN3000 / 120" for water transportation pipelines.

The system of choice for meeting the rigid quality standards of the Recreational Water, Life Sciences, Pharmacy, Cosmetics and Food & Beverage markets. The Aquafine UV Logic Series uses one of the most advanced technologies, the low-pressure, high-output (LPHO) amalgam lamp.

This filter is designed to provide economical treatment of smaller flows with the added advantage of retrofitting existing traveling bridge sand filters.

The Arkal Super Galaxy is a high-flow rate, self-cleaning, automatic disc filter. It is practical for water and wastewater treatment plants, central water systems for irrigation, large cooling tower power plants, ballast water, and saltwater, as it handles desalination. In addition, it controls algae and reduces hydraulic filtration degrees to less than 20 microns. Its vertical and horizontal installation options accommodate all space issues.

The SAF series are automatic filters with a self-cleaning mechanism driven by an electric motor. The SAF filters are designed to work with various types of screens in filtration degrees from 500 to 10 micron

LATEST INSIGHTS ON DRINKING WATER

DRINKING WATER VIDEOS

On Wednesday, November 19, 2014, at 10:15 a.m. in 2322 Rayburn House Office Building, the Subcommittee on Environment and the Economy will hold a hearing entitled “Cyanotoxins in Drinking Water."

Fresh off TrojanUV being named manufacturer of the year by the WateReuse Association, Water Online caught up with Jennifer Muller, Vice President of Global Municipal Sales for TrojanUV at this year’s WEFTEC, to understand how ultra violet systems are being applied in the growing movement towards direct and indirect potable water reuse.

In Raleigh, N.C., there's a house... or what looks like a house. What's hidden inside is more important than most people realize.

Bill Gates challenges Jimmy to taste test water from the Omniprocessor, which turns sewage into clean drinking water.

How researchers at UC Merced are developing a better understanding of the three sources of water upon which California depends in order to adapt to the effects of environmental changes and make better use of this most precious of our natural resources.

ABOUT DRINKING WATER

In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA)

Drinking water considerations can be divided into three core areas of concern:

  1. Source water for a community’s drinking water supply
  2. Drinking water treatment of source water
  3. Distribution of treated drinking water to consumers

Drinking Water Sources

Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater. 

Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.

Drinking Water Treatment

Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.

There are a variety of technologies and processes that can be used for contaminant removal and the removal of pathogens to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.

The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.

The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.

During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.

Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.

Drinking Water Distribution

Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.

A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.

Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.